1 Dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.11)dnl dnl Minimum Autoconf version required.
4 AC_INIT(include/features.h)
5 AC_CONFIG_HEADER(config.h)
7 # This will get text that should go into config.make.
10 # Check for a --with-gmp argument and set gmp-srcdir in config.make.
12 --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
15 yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
17 *) config_vars="$config_vars
18 gmp-srcdir = $withval" ;;
21 # Check for a --with-gettext argument and set gettext-srcdir in config.make.
22 AC_ARG_WITH(gettext, dnl
23 --with-gettext=DIR find GNU gettext source code in DIR (not needed),
25 case "$with_gettext" in
27 AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;;
30 config_vars="$config_vars
31 gettext-srcdir = $withval" ;;
35 dnl Arguments to specify presence of other packages/features.
37 [ --with-fp if using floating-point hardware [default=yes]],
38 with_fp=$withval, with_fp=yes)
39 AC_ARG_WITH(gnu-binutils, dnl
40 --with-gnu-binutils if using GNU binutils (as and ld),
41 gnu_binutils=$withval, gnu_binutils=no)
42 AC_ARG_WITH(gnu-ld, dnl
43 --with-gnu-ld if using GNU ld (in the binutils package),
44 gnu_ld=$withval, gnu_ld=no)
45 AC_ARG_WITH(gnu-as, dnl
46 --with-gnu-as if using GNU as (in the binutils package),
47 gnu_as=$withval, gnu_as=no)
48 test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes
50 --with-elf if using the ELF object format,
53 AC_ARG_ENABLE(libio, dnl
54 [ --enable-libio build in GNU libio instead of GNU stdio],
55 [if test $enableval = yes; then
62 AC_ARG_ENABLE(sanity-checks, dnl
63 [ --disable-sanity-checks really do not use threads (should not be used
64 except in special situations) [default=yes]],
65 enable_sanity=$enableval, enable_sanity=yes)
67 dnl Arguments to enable or disable building the shared, profiled, and
68 dnl -fomit-frame-pointer libraries.
69 AC_ARG_ENABLE(shared, dnl
70 [ --enable-shared build shared library [default=yes if GNU ld & ELF]],
71 shared=$enableval, shared=default)
72 AC_ARG_ENABLE(profile, dnl
73 [ --enable-profile build profiled library [default=yes]],
74 profile=$enableval, profile=yes)
75 AC_ARG_ENABLE(omitfp, dnl
76 [ --enable-omitfp build undebuggable optimized library [default=no]],
77 omitfp=$enableval, omitfp=no)
78 AC_ARG_ENABLE(bounded, dnl
79 [ --enable-bounded build with runtime bounds checking [default=no]],
80 bounded=$enableval, bounded=no)
82 dnl Generic infrastructure for drop-in additions to libc.
83 AC_ARG_ENABLE(add-ons, dnl
84 [ --enable-add-ons=DIR... configure and build named extra directories],
85 [add_ons=`echo "$enableval" | sed 's/,/ /g'`],
87 AC_CONFIG_SUBDIRS($add_ons)
89 if test x"$add_ons" != x; then
91 add_ons_pfx="$add_ons_pfx $f/"
95 dnl On some platforms we cannot use dynamic loading. We must provide
96 dnl static NSS modules.
97 AC_ARG_ENABLE(static-nss, dnl
98 [ --enable-static-nss build static NSS modules [default=no]],
99 static_nss=$enableval, static_nss=no)
100 if test x"$static_nss" = xyes; then
101 AC_DEFINE(DO_STATIC_NSS)
106 # The way shlib-versions is used to generate soversions.mk uses a
107 # fairly simplistic model for name recognition that can't distinguish
108 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
109 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
110 # tell. This doesn't get used much beyond that, so it's fairly safe.
115 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
119 # We keep the original values in `$config_*' and never modify them, so we
120 # can write them unchanged into config.make. Everything else uses
121 # $machine, $vendor, and $os, and changes them whenever convenient.
122 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
124 # Some configurations imply other options.
126 gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
127 # These systems always use GNU tools.
128 gnu_ld=yes gnu_as=yes ;;
131 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
132 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
134 gnu* | linux* | sysv4* | solaris2*)
135 # These systems (almost) always use the ELF format.
140 machine=$config_machine
141 vendor=$config_vendor
144 dnl We need to use [ and ] for other purposes for a while now.
146 # Expand the configuration machine name into a subdirectory by architecture
147 # type and particular chip.
149 a29k | am29000) base_machine=a29k machine=a29k ;;
150 alpha*) base_machine=alpha machine=alpha/$machine ;;
151 arm*) base_machine=arm machine=arm/$machine ;;
152 hppa*) base_machine=hppa machine=hppa/$machine ;;
153 i[3456]86) base_machine=i386 machine=i386/$machine ;;
154 m680?0) base_machine=m68k machine=m68k/$machine ;;
155 m68k) base_machine=m68k machine=m68k/m68020 ;;
156 m88???) base_machine=m88k machine=m88k/$machine ;;
157 m88k) base_machine=m88k machine=m88k/m88100 ;;
158 mips*) base_machine=mips machine=mips/$machine ;;
159 mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
160 sparc[6789]) base_machine=sparc machine=sparc/$machine ;;
161 supersparc) base_machine=sparc machine=sparc/sparc8 ;;
164 AC_SUBST(base_machine)
166 # Compute the list of sysdep directories for this configuration.
167 # This can take a while to compute.
168 sysdep_dir=$srcdir/sysdeps
169 AC_MSG_CHECKING(sysdep dirs)
170 dnl We need to use [ and ] for other purposes for a while now.
172 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
173 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
178 netbsd* | 386bsd* | freebsd* | bsdi*)
179 base_os=unix/bsd/bsd4.4 ;;
180 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
182 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
185 base_os=unix/sysv/sysv4 ;;
187 base_os=standalone ;;
192 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
195 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
199 o=`echo $tail | sed 's/[0-9]*$//'`
200 if test $o != $tail; then
203 # For linux-gnu, try linux-gnu, then linux.
204 o=`echo $tail | sed 's/-.*$//'`
205 if test $o != $tail; then
209 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
212 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
218 # For sparc/sparc9, try sparc/sparc9 and then sparc.
221 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
223 # Prepend the machine's FPU directory unless --without-fp.
224 if test "$with_fp" = yes; then
231 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
234 # Find what sysdep directories exist.
236 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
237 for d in $add_ons_pfx ''; do
238 for b in $base ''; do
239 for m0 in $mach ''; do
240 for v in /$vendor ''; do
241 for o in /$ostry ''; do
242 for m in $mach ''; do
243 if test "$m0$b$v$o$m"; then
244 try="${d}sysdeps$m0$b$v$o$m"
245 test -n "$enable_debug_configure" &&
246 echo "$0 [DEBUG]: try $try" >&2
249 *) dest=$srcdir/$try ;;
251 if test -d $dest; then
252 sysnames="$sysnames $try"
253 { test -n "$o" || test -n "$b"; } && os_used=t
254 { test -n "$m" || test -n "$m0"; } && machine_used=t
265 if test -z "$os_used" && test "$os" != none; then
266 AC_MSG_ERROR(Operating system $os is not supported.)
268 if test -z "$machine_used" && test "$machine" != none; then
269 AC_MSG_ERROR(The $machine is not supported.)
272 # We have now validated the configuration.
275 # If using ELF, look for an `elf' subdirectory of each machine directory.
276 # We prepend these rather than inserting them whereever the machine appears
277 # because things specified by the machine's ELF ABI should override
278 # OS-specific things, and should always be the same for any OS on the
279 # machine (otherwise what's the point of an ABI?).
280 if test "$elf" = yes; then
282 for d in $add_ons_pfx ''; do
285 *) xsrcdir=$srcdir/ ;;
288 if test -d $xsrcdir${d}sysdeps$m/elf; then
289 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
293 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
297 # Expand the list of system names into a full list of directories
298 # from each element's parent name and Implies file (if present).
301 while test $# -gt 0; do
305 case " $names " in *" $name "*)
306 # Already in the list.
310 # Report each name as we discover it, so there is no long pause in output.
311 echo $ac_n "$name $ac_c" >&AC_FD_MSG
313 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
317 *) xsrcdir=$srcdir/ ;;
319 test -n "$enable_debug_configure" &&
320 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
322 if test -f $xsrcdir$name/Implies; then
323 # Collect more names from the `Implies' file (removing comments).
324 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
326 for x in $implied_candidate; do
327 if test -d $xsrcdir$name_base/$x; then
328 implied="$implied $name_base/$x";
330 AC_MSG_WARN($name/Implies specifies nonexistent $x)
337 # Add NAME to the list of names.
340 # Find the parent of NAME, using the empty string if it has none.
342 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
345 # Add the names implied by NAME, and NAME's parent (if it has one), to
346 # the list of names to be processed (the argument list). We prepend the
347 # implied names to the list and append the parent. We want implied
348 # directories to come before further directories inferred from the
349 # configuration components; this ensures that for sysv4, unix/common
350 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
352 sysnames="`echo $implied $* $parent`"
353 test -n "$sysnames" && set $sysnames
356 # Add the default directories.
357 sysnames="$names sysdeps/generic sysdeps/stub include"
359 # The other names were emitted during the scan.
360 AC_MSG_RESULT(sysdeps/generic sysdeps/stub include)
366 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
367 # The makefiles need to use a different form to find it in $srcdir.
368 INSTALL='$(..)./install-sh -c'
371 AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :)
375 if test $host != $build; then
376 AC_CHECK_PROGS(BUILD_CC, gcc cc)
378 AC_SUBST(cross_compiling)
380 AC_CHECK_TOOL(AR, ar)
381 AC_CHECK_TOOL(RANLIB, ranlib, :)
383 AC_PATH_PROG(BASH, bash, no)
384 if test "$BASH" != no &&
385 $BASH -c 'test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
386 libc_cv_have_bash2=yes
388 libc_cv_have_bash2=no
390 AC_SUBST(libc_cv_have_bash2)
392 dnl We need a ksh compatible shell for tzselect.
393 if test "$BASH" = no; then
394 AC_PATH_PROG(KSH, ksh, no)
395 if test "$KSH" = no; then
405 AC_SUBST(libc_cv_have_ksh)
407 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
408 echo '#include <stddef.h>
409 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
410 if eval "$ac_cpp conftest.c 2>/dev/null" \
411 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
412 libc_cv_signed_size_t=no
414 libc_cv_signed_size_t=yes
417 if test $libc_cv_signed_size_t = yes; then
418 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
419 cat >> confdefs.h <<\EOF
421 #define __SIZE_TYPE__ unsigned
425 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
427 [#define __need_size_t
428 #define __need_wchar_t
431 #include <stddef.h>], [size_t size; wchar_t wchar;
433 #error stddef.h ignored __need_*
435 if (&size == NULL || &wchar == NULL) abort ();],
436 libc_cv_friendly_stddef=yes,
437 libc_cv_friendly_stddef=no)])
438 if test $libc_cv_friendly_stddef = yes; then
439 config_vars="$config_vars
440 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
443 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
444 libc_cv_need_minus_P, [dnl
445 cat > conftest.S <<EOF
446 #include "confdefs.h"
447 /* Nothing whatsoever. */
449 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
450 libc_cv_need_minus_P=no
452 libc_cv_need_minus_P=yes
455 if test $libc_cv_need_minus_P = yes; then
456 config_vars="$config_vars
457 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
460 AC_CACHE_CHECK(for assembler global-symbol directive,
461 libc_cv_asm_global_directive, [dnl
462 libc_cv_asm_global_directive=UNKNOWN
463 for ac_globl in .globl .global; do
464 cat > conftest.s <<EOF
469 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
470 libc_cv_asm_global_directive=${ac_globl}
473 test $libc_cv_asm_global_directive != UNKNOWN && break
475 if test $libc_cv_asm_global_directive = UNKNOWN; then
476 AC_MSG_ERROR(cannot determine asm global directive)
478 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
481 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
482 cat > conftest.s <<EOF
485 .set glibc_conftest_frobozz,foo
486 $libc_cv_asm_global_directive glibc_conftest_frobozz
488 # The alpha-dec-osf1 assembler gives only a warning for `.set'
489 # (but it doesn't work), so we must do a linking check to be sure.
490 cat > conftest1.c <<\EOF
491 extern int glibc_conftest_frobozz;
492 main () { printf ("%d\n", glibc_conftest_frobozz); }
494 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
495 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
496 libc_cv_asm_set_directive=yes
498 libc_cv_asm_set_directive=no
501 if test $libc_cv_asm_set_directive = yes; then
502 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
505 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
506 [cat > conftest.s <<EOF
509 .symver _sym,sym@VERS
511 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
512 libc_cv_asm_symver_directive=yes
514 libc_cv_asm_symver_directive=no
517 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
518 if test $libc_cv_asm_symver_directive = yes; then
519 cat > conftest.s <<EOF
522 .symver _sym,sym@VERS
524 cat > conftest.map <<EOF
529 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
530 if AC_TRY_COMMAND([${CC-cc} $CFLAGS --shared -o conftest.so conftest.o
531 -Wl,--version-script,conftest.map
534 libc_cv_ld_version_script_option=yes
536 libc_cv_ld_version_script_option=no
539 libc_cv_ld_version_script_option=no
542 libc_cv_ld_version_script_option=no
545 if test $libc_cv_asm_symver_directive = yes &&
546 test $libc_cv_ld_version_script_option = yes; then
548 AC_DEFINE(DO_VERSIONING)
554 if test $elf = yes; then
555 AC_CACHE_CHECK(for .previous assembler directive,
556 libc_cv_asm_previous_directive, [dnl
557 cat > conftest.s <<EOF
561 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
562 libc_cv_asm_previous_directive=yes
564 libc_cv_asm_previous_directive=no
567 if test $libc_cv_asm_previous_directive = yes; then
568 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
570 AC_CACHE_CHECK(for .popsection assembler directive,
571 libc_cv_asm_popsection_directive, [dnl
572 cat > conftest.s <<EOF
573 .pushsection foo_section
576 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
577 libc_cv_asm_popsection_directive=yes
579 libc_cv_asm_popsection_directive=no
582 if test $libc_cv_asm_popsection_directive = yes; then
583 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
588 if test $elf != yes; then
589 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
590 [AC_TRY_COMPILE(, [asm (".section .init");
591 asm (".section .fini");
593 libc_cv_have_initfini=yes,
594 libc_cv_have_initfini=no)])
595 AC_SUBST(libc_cv_have_initfini)dnl
596 if test $libc_cv_have_initfini = yes; then
597 AC_DEFINE(HAVE_INITFINI)
601 if test $elf = yes; then
602 libc_cv_asm_underscores=no
604 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
605 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
606 libc_cv_asm_underscores=yes,
607 libc_cv_asm_underscores=no)])
609 if test $libc_cv_asm_underscores = no; then
610 AC_DEFINE(NO_UNDERSCORES)
613 if test $elf = yes; then
614 libc_cv_weak_symbols=yes
615 libc_cv_asm_weak_directive=yes
616 libc_cv_asm_weakext_directive=no
618 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
620 cat > conftest.s <<EOF
622 ${libc_cv_asm_global_directive} foo
627 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
628 libc_cv_asm_weak_directive=yes
630 libc_cv_asm_weak_directive=no
634 if test $libc_cv_asm_weak_directive = no; then
635 AC_CACHE_CHECK(for assembler .weakext directive,
636 libc_cv_asm_weakext_directive,
638 cat > conftest.s <<EOF
640 ${libc_cv_asm_global_directive} foo
645 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
646 libc_cv_asm_weakext_directive=yes
648 libc_cv_asm_weakext_directive=no
655 if test $libc_cv_asm_weak_directive = yes; then
656 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
657 elif test $libc_cv_asm_weakext_directive = yes; then
658 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
661 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
662 cat > conftest.c <<\EOF
667 dnl No \ in command here because it ends up inside ''.
668 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
669 -nostdlib -nostartfiles -Wl,--no-whole-archive
670 -o conftest conftest.c 1>&AC_FD_CC]); then
671 libc_cv_ld_no_whole_archive=yes
673 libc_cv_ld_no_whole_archive=no
676 AC_SUBST(libc_cv_ld_no_whole_archive)dnl
678 AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl
679 cat > conftest.c <<\EOF
684 dnl No \ in command here because it ends up inside ''.
685 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
686 -nostdlib -nostartfiles -fno-exceptions
687 -o conftest conftest.c 1>&AC_FD_CC]); then
688 libc_cv_gcc_no_exceptions=yes
690 libc_cv_gcc_no_exceptions=no
693 AC_SUBST(libc_cv_gcc_no_exceptions)dnl
695 ### End of automated tests.
696 ### Now run sysdeps configure fragments.
698 # sysdeps configure fragments may set these with files to be linked below.
702 # Iterate over all the sysdep directories we will use, running their
703 # configure fragments, and looking for a uname implementation.
705 for dir in $sysnames; do
708 *) dest=$srcdir/$dir ;;
710 if test -r $dest/configure; then
711 AC_MSG_RESULT(running configure fragment for $dest)
715 if test -z "$uname"; then
716 if test -r $dest/uname.c ||
717 test -r $dest/uname.S ||
718 { test -r $dest/syscalls.list &&
719 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
726 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
728 # If we will use the generic uname implementation, we must figure out what
729 # it will say by examining the system, and write the results in config-name.h.
730 if test "$uname" = "sysdeps/generic"; then
733 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
735 if test $uname_sysname != $config_os; then
736 config_release=`echo $config_os | sed s/$uname_sysname//`
739 AC_DEFUN(LIBC_KERNEL_ID, [dnl
740 if test -r /vmunix; then
741 kernel_id=`strings /vmunix | grep UNIX`
742 elif test -r /dynix; then
743 kernel_id=`strings /dynix | grep DYNIX`
749 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
750 AC_REQUIRE([LIBC_KERNEL_ID])dnl
752 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
754 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
755 != x$config_release; then
756 # The configuration release is a substring of the kernel release.
757 libc_cv_uname_release=$kernel_release
758 elif test x$config_release != x; then
759 libc_cv_uname_release=$config_release
760 elif test x$kernel_release != x; then
761 libc_cv_uname_release=$kernel_release
763 libc_cv_uname_release=unknown
765 uname_release="$libc_cv_uname_release"
767 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
768 AC_REQUIRE([LIBC_KERNEL_ID])dnl
770 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
772 if test -n "$kernel_version"; then
773 libc_cv_uname_version="$kernel_version"
775 libc_cv_uname_version=unknown
777 uname_version="$libc_cv_uname_version"
779 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
780 config_uname=config-name.h:config-name.in
782 # For non-generic uname, we don't need to create config-name.h at all.
786 AC_MSG_CHECKING(stdio selection)
789 libio) AC_DEFINE(USE_IN_LIBIO) ;;
790 default) stdio=stdio ;;
792 AC_MSG_RESULT($stdio)
794 AC_SUBST(libc_cv_slibdir)
795 AC_SUBST(libc_cv_sysconfdir)
796 AC_SUBST(libc_cv_rootsbindir)
798 AC_SUBST(has_ldconfig)
800 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
801 if test $gnu_ld = yes; then
802 AC_DEFINE(HAVE_GNU_LD)
804 if test $gnu_as = yes; then
805 AC_DEFINE(HAVE_GNU_AS)
807 if test $elf = yes; then
812 if test $shared = default; then
813 if test $gnu_ld = yes; then
816 # For now we do not assume shared libs are available. In future more
817 # tests might become available.
828 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
831 config_makefile=Makefile
834 VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h`
837 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, ,
838 [echo '$config_vars' >> config.make; test -d bits || mkdir bits])